Isolation & Bleeding Gauge Valves P1/A & P1/B Series

PRECISION Valves are designed, built & tested to rigorous standards, & provide bubble tight sealing across the pressure/temperature curve. The PRECISION Isolation & Bleeding Gauge Valve Series allow for isolation of the instrument from process only (P1/A Series), or isolation of the instrument with the option to bleed off trapped pressure between isolation valve and instrument (P1/B Series).


  • Single Valve allows positive isolation, P1/A Series
  • Single Valve with Bleed allows positive isolation and bleed screw to bleed off trapped pressure, P1/B Series
  • Available in 6,000 & 10,000 Psig ratings
  • Connections from 3/8” through 1”
  • Carbon steel, 316 L SS in stock
  • Wide range of materials of construction available
  • NPT threads standard, BSP available
  • PTFE packing or graphite packing

Applications include:

  • Refineries
  • Chemical/Petrochemical Plants
  • Cryogenics
  • Oil/Gas Production
  • Water/Wastewater
  • Pulp/Paper
  • Mining
  • Skid Mounted Process Equipment